Unity 20 Bluetooth


Unity 20 Bluetooth is the world’s first elegantly designed, low cost, fully programmable Bluetooth fingerprint reader. Featuring a sleek wireless design with a premium FBI certified fingerprint sensor, the Unity 20 Bluetooth can securely transfer fingerprint data wirelessly to mobile devices for convenient biometric authentication, identification and enrollment.



Thoughtful Design

Unity 20 Bluetooth can be used together with an Apple iOS or Android mobile device (such as iPhone, iPad, smartphone or tablet) to scan, enroll, and authenticate users without the need for cables or OTG adapters. The reader is built with the industry’s most rugged and patented optical fingerprint technology and yet is small enough to be carried in a pocket and held comfortably in one hand. It can also be used on the desktop with Bluetooth-enabled computers. Thoughtfully designed, the device works in either direction so you scan your finger or another person’s finger without having to turn the device around.




Advanced Features for Developers

Developers can use Unity 20 Bluetooth also right out of the box by calling the simple APIs of the pre-installed Fingerprint Management System (FMS) software. Alternatively, the device can be custom programmed using the built-in Linux development environment, MINEX-compliant fingerprint algorithms, OpenSSL cryptography libraries, and 1 GHz CPU. For stronger security, the device can also store encrypted fingerprint templates and process them in a closed environment without ever leaving the device. It also provides high-speed fingerprint matching in either verification mode (1:1) or identification mode (1:N), using the built-in SecuSearch Engine. More information about the capabilities and internal components can be found on the U20-ASF-BT page.



  • FBI Certified (PIV, FIPS 201, Mobile ID FAP 20 Compliant) meets FBI Image Quality standardsThis product was certified by the FBI as tested and in compliance with the FBI’s Next Generation Identification (NGI) Image Quality Specifications (IQS). The review of the test data was conducted by the FBI / Criminal Justice Information Services Division / Global Operations Section, as part of the Biometric Center of Excellence.
  • Bluetooth wireless connectivity for no-hassle, cable-free convenience
  • Rugged, high-performance, maintenance-free optical sensor resistant to scratches, impact, vibration and electrostatic shock
  • Fast recognition and high quality imaging of difficult fingerprints (dry, wet, scarred) in challenging environments
  • Fast and accurate verification
  • Readily accessible for any finger
  • Auto-On™ – automatic finger detection technology (when used with apps built with SecuGen SDKs)
  • Smart Capture™ – self-adjusting scanning technology (when used with apps built with SecuGen SDKs)
  • Device Recognition™ – device authentication technology (when used with apps built with SecuGen SDKs)
  • Fingerprint template encryption (when using SecuGen Proprietary template format)
  • Latent print rejection (does not accept prior fingerprints left behind on sensor)
  • Rechargeable lithium ion battery and micro USB cable for charging
  • Ultra-compact, lightweight and portable
  • Dual direction finger guide: for self-use or administering to other users
  • USB connection

Technical Specifications


  • Model
  • Bluetooth Mode
  • Fingerprint Module (Type)
  • User Capacity
  • Image Resolution
  • Image Size
  • Platen Size
  • Sensing Area
  • Image Gray Scale
  • Light Source
  • Smart Capture Speed
  • Biometric Standards/Specs
  • Dimensions
  • Weight
  • Bluetooth
  • Battery
  • USB Interface
  • Temperature
  • Operating Humidity
  • Supply Voltage
  • Current Consumption
  • Compliance
  • Other Features (*when used with SecuGen SDKs)
  • Warranty
  • Supported Operating Systems

Unity 20 Bluetooth

  • HU20-ASF-BT2
  • SPP (Serial Port Protocol) or BLE (Bluetooth Low Energy)
  • U20-ASF-BT2 (contact)
  • Up to 700 users (1,400 templates) (1:1 and 1:N)
  • 500 DPI
  • 300 x 400 pixels
  • 18.1 mm x 22.9 mm
  • 15.2 mm x 20.3 mm
  • 256 levels (8-bit)
  • LED
  • 0.2 ~ 0.5 seconds
  • INCITS 378, ISO/IEC 19794-2, FIPS 201, FBI (PIV, Mobile ID FAP 20), NIST MINEX, WSQ
  • 45.2 mm x 103.3 mm x 36.7 mm
  • 90 g
  • Bluetooth V4.2 (HS) with Integrated Class 1.5 PA and Low Engery (BLE) support
    BT host digital interface: UART (up to 4 Mbps)
    Coexisting IEEE wireless technology on integrated die solution
  • Rated Capacity: 1000 mAh
    Internal Resistance: ≤70 mΩ
    Voltage (V): 3.7 (nominal), 4.2 (charged), 2.75 (discharge cut-off)
  • Micro-USB for charging
  • Operating: -10°C ~ 60°C
    Charging: 10°C ~ 45°C
  • 90% or less RH, noncondensing
  • Built-in battery or 5V DC (via USB)
  • 200 mA @ 3.7V (max, operating)
    1000 mA @ 5V (max, charging)
  • FCC, CE, KC, RoHS
  • *Auto-On™, *Smart Capture™, *Device Recognition™, 360 Degree Fingerprint Rotation
  • One year limited
  • Windows 11 / 10 / 8.1 / 7, Windows Server 2016 / 2012 / 2008 R2, Android 3.1 and above, Apple iOS (BLE only)

Benefits of Using SecuGen Fingerprint Readers


SecuGen fingerprint readers are easy to use and can be installed quickly on any Windows PC. Backed by the industry’s best warranty, years of field use and proven reliability under extreme conditions, SecuGen fingerprint readers provide consistent performance and security for a growing number of software applications for desktop, mobile, network, enterprise and Internet environments.


When used for biometric authentication as part of an overall security program, SecuGen fingerprint readers can help reduce the hassles of password overload, decrease the risks of security breaches, improve accountability and add true non-repudiation, all while making it more convenient and intuitive for any user.


Look to SecuGen for advanced, fingerprint biometric technologies that let your fingerprints act like digital passwords that cannot be lost, forgotten or stolen.